Why doesn't security work for Tomcat 6.0.14

I'm trying to give myself access to the manager web app, but have been = unsuccessful. My tomcat-users.xml looks like this: but I always get a "401 Unauthorized" error. Any ideas?

security with tomcat-users.xml

I'm trying to give myself access to the manager web app, but have been unsuccessful. My tomcat-users.xml looks like this: but I always get a "401 Unauthorized" error. Any ideas?